ASTROSAT CZTI

Data Quality Report

Orbit 58522

Creation date: 2026-07-23T09:37:44.705019
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_044T04_9000006592_58522cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58522cztM0_level2_quad_clean.evt
Size (bytes)430,159,68094,625,280
Size410.2 MB 90.2 MB
Events in quadrant A3,312,113617,903
Events in quadrant B3,846,981666,188
Events in quadrant C3,960,518579,321
Events in quadrant D4,297,534547,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143291
B0157281
C0163491
D0171996

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6508891.367548%
B65091402.150868%
C65092553.917652%
D65082744.210203%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7333 6508 15 15 0.20% 0.23%
B 7334 6509 71 71 0.97% 1.09%
C 7334 6510 169 169 2.30% 2.60%
D 7333 6508 217 217 2.96% 3.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 17 344542 1920.63 714 697 179.0
A 2 143 35035 191.8 714 697 179.0
A 12 80 32725 178.9 714 697 179.0
B 5 185 272416 1788.3 707 682 152.0
B 4 171 199008 1305.2 707 682 152.0
B 2 249 136575 894.32 707 682 152.0
C 5 10 390772 2062.42 686 680 189.1
C 6 223 144895 762.47 686 680 189.1
C 12 249 131185 689.98 686 680 189.1
D 3 12 829918 4235.53 687 655 195.8
D 2 153 168535 857.46 687 655 195.8
D 8 160 127656 648.67 687 655 195.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter